Murder buffs befriend infamous incarcerated killers and get them to send personal items -- anything from locks of their hair or fingernail clippings to handwritten letters and autographed doodles. The sickening souvenirs are then auctioned off to the highest bidder.

Ours is a free capitalist country, where people can say, sell and buy almost anything they want on the Internet. And although many find these items despicable, there must be dark souls who enjoy living vicariously through serial killers and putting a piece of them on their nightstands.